One who forces their religion down another's throat in an effort to 'educate the ignorant/unenlightened'. These people are well known for every wrong to ever fall upon mankind, as well as the birth of the atheist and the agnostic.

News flash, guys; God gave us the Bible to TEACH, not to BELABOUR! If they want to be Christian/Jewish/Muslim/Buddist/whatever, they'll do whatever they can to convert, If they don't, don't force them; you'll just make more atheists.